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Fan Efficiency Regulations and Technology Advances

The Air Movement and Control Association (AMCA) estimates that fans consume between 30 and 40 percent of commercial HVAC energy.Improving fan efficiency is an important step towards reducing overall building energy use. This ENL will discuss common fan efficiency metrics, and explain the requirements of new regulations and industry energy standards. It will also discuss recent fan technology advances, including motorized impellers, direct-drive plenum fans, fan arrays, optimized motor selection, variable aspect ratio, and vibration isolation.

Presenters:John Murphy and Dustin Meredith

After attending you will be able to:

·Summarize the most recent regulations and industry energy standards related to fan efficiency

·Summarize how the ASHRAE Standard 90.1 fan power limitation applies to various air system configurations